Web2 days ago · Hot (geothermal) pools and streams, a specific type of aquatic biotopes having almost worldwide distribution, maintain rich faunas of animals belonging to various taxa. Snails (Gastropoda) represent one of such groups, which form populations in geothermal waterbodies of all continents. Some freshwater snail species produce morphologically … WebOrder [unassigned] Caenogastropoda (temporary name) Environment. marine, brackish, fresh, terrestrial. Original description. Cox, L. R. (1960). Thoughts on the classification of …
Fossil Record of Gastropoda - Digital Atlas of Ancient Life
WebVetigastropoda is a major taxonomic group of sea snails, marine gastropod mollusks that form a very ancient lineage. Taxonomically the Vetigastropoda are sometimes treated as an order, although they are … WebNov 10, 2024 · The great diversity of this phylum is represented best by the two large gastropod groups Heterobranchia and Caenogastropoda which together form the clade Apogastropoda. They comprise over 64,000 species living in various habitats including the sea, fresh waters and terrestrial ecosystems, as well as all kinds of intermediate … free hawaiian language classes
Calyptraeidae from the northeast Pacific (Gastropoda: Caenogastropoda ...
WebOct 8, 2014 · The truncatelloidean family Clenchiellidae, previously treated as a tribe or subfamily of Hydrobiidae, is diagnosed as a distinct family including Clenchiella and three new genera, Coliracemata, Colenuda and Coleglabra. The family is characterised by the discoidal shell with spiral keels or cords, and a wide umbilicus. WebEven if one would adopt the standards of Evolutionary Systematics and tolerate paraphyletic taxa under some conditions, it would be embarrassing to maintain Prosobranchia at the same taxonomic rank as Opisthobranchia and Pulmonata, which together form a clade (Heterobranchia) which is at large the sister-group of Caenogastropoda (i.e. part of ... WebA sister group relationship of Caenogastropoda with Neritimorpha may be just as feasible as one with the heterobranchs, especially as all three groups share aragonitic crossed-lamellar shell structure and lack of nacre. While heterobranchs have a heterostrophic larval shell, in neritimorphs and caenogastropods the larval shell is orthostrophic. ... blue bed covers